There is no doubt in my mind that Bassel builds good quality stuff. I feel the real problems start when buyers get their lathes and are pretty much on their own when it comes to figuring out how to use them. Some things in repairing cues are confusing to the novice, at first. They just need a little push-start.
I didn't have issues with mine because I had extensive experience with another brand of repair lathe. I truly believe that with the right instructions most users won't have problems. If a good detailed video, and perhaps a book too, were part of the package explaining the proper way of setting up and using the machine, along with how to adjust and maintain it, the operation of his lathes would be crystal clear. All IMO, of course.
My own experience in dealing with Bassel has been flawless. I couldn't have expected more. At no cost to me he has voluntarily sent a few upgraded items that weren't available when I bought my machine, although I offered payment when I inquired. As far as I'm concerned it just doesn't get any better than that.